| 甲基噻吩在HY分子筛上的吸附、脱附及转化行为 |
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| 引用本文： | 赵胜楠,莫周胜,秦玉才,宋艳芬,石利飞,朱萌萌,宋丽娟,段林海.甲基噻吩在HY分子筛上的吸附、脱附及转化行为[J].燃料化学学报,2015,43(5):614-619. |
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| 作者姓名： | 赵胜楠 莫周胜 秦玉才 宋艳芬 石利飞 朱萌萌 宋丽娟 段林海 |
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| 作者单位： | 1. Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Province, Liaoning Shihua University, Fushun 113001, China;
2. College of Chemistry & Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China |
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| 基金项目： | 国家自然科学基金(21476101, 21376114); 辽宁省自然科学基金(2013020122); 中国石油天然气股份有限公司(10-01A-01-01-01)。 |
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| 摘 要： | 由NH4Y分子筛制备了HY分子筛,运用N2吸附、NH3-TPD和Py-FTIR等手段表征HY分子筛的物化性能;采用智能重量分析仪(IGA)方法研究了甲基噻吩(2-甲基噻吩、3-甲基噻吩)在HY分子筛上的吸附-脱附行为;采用程序升温脱附-质谱(TPD-MS)联用手段研究了甲基噻吩在HY分子筛上的转化行为。结果表明,在200 ℃下 2-甲基噻吩和3-甲基噻吩在HY分子筛中的强B酸上发生强化学吸附作用,与B酸结合后生成了甲基噻吩的碳正离子结构进而发生了歧化反应、脱烷基反应以及裂化反应;与2-甲基噻吩不同的是,3-甲基噻吩与HY通过一定的氢转移反应生成了3-甲基四氢噻吩,且200 ℃吸附条件下3-甲基噻吩比2-甲基噻吩更容易发生裂化反应。
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| 关 键 词： | 甲基噻吩 HY 吸附 歧化 脱烷基 催化裂化 |
| 收稿时间： | 2014-10-27 |
Adsorption,desorption and conversion of methylthiophene on HY zeolite |
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| ZHAO Sheng-nan,MO Zhou-sheng,QIN Yu-cai,SONG Yan-fen,SHI Li-fei,ZHU Meng-meng,SONG Li-juan,DUAN Lin-hai.Adsorption,desorption and conversion of methylthiophene on HY zeolite[J].Journal of Fuel Chemistry and Technology,2015,43(5):614-619. |
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| Authors: | ZHAO Sheng-nan MO Zhou-sheng QIN Yu-cai SONG Yan-fen SHI Li-fei ZHU Meng-meng SONG Li-juan DUAN Lin-hai |
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| Institution: | 1. Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Province, Liaoning Shihua University, Fushun 113001, China;
2. College of Chemistry & Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China |
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| Abstract: | HY zeolite obtained from NH4Y was characterized by N2 physisorption, NH3-TPD, and in-situ Py-FTIR. The adsorption, desorption, and conversion of methylthiophene on the HY zeolite was investigated by using the intelligent gravimetric analysis (IGA) and temperature programmed desorption-mass spectrum (TPD-MS). The results indicated that 2-methylthiophene and 3-methylthiophene are strongly chemisorbed on the strong Brnsted acid sites of HY zeolite, which promote the disproportionation, dealkylation and cracking reactions at 200 ℃. Compared with 2-methylthiophene, 3-methylthiophene is prone to crack and form 3-methyltetrahydrothiophene via the hydrogen transfer reactions. |
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| Keywords: | methylthiophene HY zeolite adsorption disproportionation aealkylation catalytic cracking |
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